Prosthesis anchor



FIG. 1 is a top perspective view;

FIG. 2 is a bottom perspective view;

FIG. 3 is a front view;

FIG. 4 is a back view;

FIG. 5 is a left side view;

FIG. 6 is a right side view;

FIG. 7 is a top view; and,

FIG. 8 is a bottom view.

The broken line showing is included for the purpose of illustrating environment and forms no part of the claimed design. 

CLAIM The ornamental design for prosthesis anchor, as shown and described. 